V. Server Programming

This part is about extending the server functionality with
user-defined functions, data types, triggers, etc. These are
advanced topics which should probably be approached only
after all the other user documentation about PostgreSQL has been understood. Later
chapters in this part describe the server-side programming
languages available in the PostgreSQL distribution as well as
general issues concerning server-side programming languages.
It is essential to read at least the earlier sections of
Chapter 35 (covering functions)
before diving into the material about server-side programming
languages.

Submit correction

If you see anything in the documentation that is not correct, does not match
your experience with the particular feature or requires further clarification,
please use
this form
to report a documentation issue.